1, physical exercise is conducive to the growth of human bones and muscles, enhance cardiopulmonary function, improve the functional state of blood circulation system, respiratory system and digestive system, and is conducive to human growth and development, improve disease resistance and enhance the adaptability of the body.

2. Reduce the chances of children suffering from heart disease, hypertension, diabetes and other diseases in adulthood.

3. Physical exercise can improve the regulation function of the nervous system, improve the ability of the nervous system to judge complex changes in human activities, and make coordinated, accurate and rapid responses in time; Make the human body adapt to the changes of the internal and external environment and maintain the normal life activities of the human body.

Extended data:

Good habit of exercise:

1, know the exercise limit. Marjory Nolan Cohen, a spokesperson for the American Nutrition and Dietetic Association and a registered fitness expert of the American Sports Medicine Association, said: "It is normal for you to feel moderately tired and sore after exercise, but if your joints feel uncomfortable or tired at the end of the day, it is not normal." Severe pain can lead to injury, and healthy exercise habits also include moderation.

2. Arrange rest days. Dr Jennifer Carter, director of the Sports Psychology Department of the Ohio State University Sports Medicine Center, believes that no matter how much you love sports, you should have a thorough rest at least once a week.

3, exercise well, but also eat well. For people with healthy habits, food is fuel, not enemy. Don't control your diet too much in order to keep fit.

4. Exercise arrangement should be natural. People should integrate exercise into their daily life, just like arranging other schedule activities, it also needs some flexibility. It doesn't matter if you miss one or two exercises because you are busy. Take part in other active sports activities (walking, climbing stairs, etc.). ) to make up for it.

Baidu encyclopedia-physical exercise

People's Network-Fitness Knowledge: Eight Good Habits of Exercise